# [−][src]Struct mynewt::Strn

    pub struct Strn {
        pub rep: StrnRep,
    }

Represents a null-terminated string, suitable for passing to Mynewt APIs as `* const char`. The string could be a null-terminated byte string created in Rust, or a pointer to a null-terminated string returned by C. Pointer may be null.

## Fields

`rep: StrnRep`

Either a byte string terminated with null, or a pointer to a null-terminated string

## Methods

### `impl Strn`[src]

#### `pub fn new(bs: &'static [u8]) -> Strn`[src]

Create a new `Strn` with a byte string. Fail if the last byte is not zero.

    Strn::new(b"network\0")
    strn!("network")

#### `pub fn from_cstr(cstr: *const u8) -> Strn`[src]

Create a new `Strn` with a null-terminated string pointer returned by C.

#### `pub fn as_ptr(&self) -> *const u8`[src]

Return a pointer to the string

#### `pub fn len(&self) -> usize`[src]

Return the length of the string. TODO: For safety, we limit to 128.

#### `pub fn as_cstr(&self) -> *const u8`[src]

Return the byte string as a null-terminated `* const char` C-style string. Fail if the last byte is not zero.

#### `pub fn as_bytestr(&self) -> &'static [u8]`[src]

Return the byte string. Fail if the last byte is not zero.

#### `pub fn validate(&self)`[src]

Fail if the last byte is not zero.

#### `pub fn validate_bytestr(bs: &'static [u8])`[src]

Fail if the last byte is not zero.

## Trait Implementations

### `impl Send for Strn`[src]

Allow threads to share Strn, since it is static.

### `impl Sync for Strn`[src]

Allow threads to share Strn, since it is static.

## Blanket Implementations

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

Performs the conversion.

### `impl<T> From<T> for T`[src]

#### `fn from(t: T) -> T`[src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(self) -> U`[src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

Performs the conversion.

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `fn borrow(&self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&self) -> TypeId`[src]

Gets the `TypeId` of `self`. Read more

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